The Collaborative International Dictionary of English v.0.48:

Methodology \Meth`od*ol"o*gy\, n. [Gr. ? method + -logy.]
   The science of method or arrangement; a treatise on method.
   --Coleridge.
   [1913 Webster]

WordNet (r) 3.0 (2006):

methodology
    n 1: the branch of philosophy that analyzes the principles and
         procedures of inquiry in a particular discipline [syn:
         methodology, methodological analysis]
    2: the system of methods followed in a particular discipline

Moby Thesaurus II by Grady Ward, 1.0:

141 Moby Thesaurus words for "methodology":
   MO, action, actions, activity, acts, address, affectation, air,
   algorithm, anality, apple-pie order, approach, arrangement, attack,
   bearing, behavior, behavior pattern, behavioral norm,
   behavioral science, blueprint, blueprinting, calculation, carriage,
   charting, comportment, conception, conduct, contrivance, course,
   culture pattern, custom, demeanor, deportment, design, device,
   discipline, disposition, doing, doings, enterprise, envisagement,
   fashion, figuring, fine fettle, folkway, foresight, forethought,
   form, game, gestures, goings-on, good condition, good shape,
   good trim, graphing, ground plan, guidelines, guise, idea,
   intention, layout, line, line of action, lines, lineup,
   long-range plan, maintien, manner, manner of working, manners,
   mapping, master plan, means, method, methodicalness, methods, mien,
   mode, mode of operation, mode of procedure, modus operandi,
   modus vivendi, motions, movements, moves, neatness,
   observable behavior, operations research, order, orderliness,
   organization, pattern, plan, planning, planning function, poise,
   port, pose, posture, practice, praxis, prearrangement, presence,
   procedure, proceeding, process, program, program of action,
   rationalization, routine, schedule, schema, schematism,
   schematization, scheme, scheme of arrangement, setup,
   social science, strategic plan, strategy, style, system,
   systematicness, systematization, tack, tactical plan, tactics,
   technique, the big picture, the drill, the how, the picture,
   the way of, tidiness, tone, trimness, way, way of life, ways, wise,
   working plan



The Free On-line Dictionary of Computing (30 December 2018):

methodology

   1.  An organised, documented set of procedures
   and guidelines for one or more phases of the software life
   cycle, such as analysis or design.  Many methodologies
   include a diagramming notation for documenting the results of
   the procedure; a step-by-step "cookbook" approach for carrying
   out the procedure; and an objective (ideally quantified) set
   of criteria for determining whether the results of the
   procedure are of acceptable quality.

   An example is The Yourdon methodology.

   2. A pretentious way of saying "method".

   (1995-04-10)